55results about How to "Prevent accidental tipping" patented technology

The invention provides a planet wheel type stair-climbing electric wheelchair. The wheelchair comprises a wheelchair frame, a chair backrest, an electric wheelchair controller, a battery, a caster, a front wheel assembly, a stair-climbing controller, a centering roller bearing, a centering bearing block, a conducting slip ring, a connecting disc, a wheel axle fixing component, two driving shafts, a direct-current turnover motor, an RV speed reducer, a pressure sensor, a control box, a tilt sensor, an anti-forerake bracket and two planet wheel groups, wherein the anti-forerake bracket is driven by an electric push rod; and the two planet wheel groups are driven by the direct-current turnover motor through the RV speed reducer and symmetrically distributed so as to realize the stair-climbing function of the electric wheelchair. In each of the planet wheel groups, special allocation of a hub motor and two free wheels is adopted; and the planet wheel groups can work in a manual mode, an electric wheelchair mode and a stair-climbing mode. In addition, in the wheelchair, the pressure sensor and the tilt sensor are used for feeding back the wheelchair running state when the electric wheelchair goes upstairs and downstairs.

The invention relates to a refrigerator which comprises a refrigerator body. A refrigerating chamber is arranged on the upper portion of the refrigerator body, and a freezing chamber is arranged on the lower portion of the refrigerator body. A refrigerator door mounted on the refrigerator body comprises an inner door and an outer door. The inner door and the outer door form the refrigerator door which is of a double-layered door structure. When the refrigerator door is closed, the inner door is positioned in the refrigerator, the outer door facing users enables the users to open the refrigerator body, the inner door and the outer door are in rotating or sliding connection, and the outer door and the refrigerator body are in rotating connection. A plurality of special storage devices and lighting devices are arranged in the refrigerator body, the refrigerating chamber and the freezing chamber according to stored objects. The refrigerator is simple in structure and convenient to use, food can be effectively stored according to different packages or cleanliness, neatness and convenience levels of the food, the problems like scattering and odor tainting of the food or food materials are avoided, safety and convenience in storing of the food or the food materials are improved, and the refrigerator is in conformity with use habits of users.

The invention discloses a sensor positioning device for explosive loading response stress tests. The sensor positioning device comprises a positioning support, a positioning piece, a base plate, a sleeve, a force transfer column and a sensor. The positioning support is a variable-diameter steel cylinder with an inner boss. One end of the positioning support is connected with the sleeve, and the force transfer column is mounted in the sleeve. The other end of the positioning support is connected with the base plate, and is positioned by a center boss on the base plate. The positioning piece is mounted at the inner boss of the positioning support. One end of the positioning piece is connected with the force transfer column, and the other end of the positioning piece contacts with the sensor tightly. The other end of the sensor is mounted in a round groove of the base plate. The sensor positioning device for the explosive loading response stress tests has the advantages that the sensor can be conveniently taken out and recycled after being impacted and loaded, the sensor can keep a good coaxial line with the force transfer column, accidental collapse of the sleeve during loading can be prevented, and technical support can be provided to convenient and accurate measurement of explosive loading response stress.

The invention relates to the field of intelligent water taking equipment, in particular to an intelligent water taking equipment based on voiceprint voice recognition and rfid technology, which comprises a water dispenser body, a water bucket, a water taking structure, a water quality monitoring structure, a fixing structure, a collecting structure, an anti-toppling structure, an RFID tag which isarranged at the bottom of the water cup and an induction coil which is positioned below the water outlet of the water dispenser body; when a water cup is placed below a water outlet of the water dispenser body to prepare for receiving water, the induction coil automatically identifies the RFID tag at the bottom of the water cup and the user authentication module carries out instant authentication, consequently, the identity of the user is recognized, the intelligent water outlet control module is further controlled to discharge water; every time drinking water data records are gathered to thepersonal drinking water health module and sent to a user mobile phone applet, a user can master and manage own drinking water health information conveniently, and the water quality monitoring moduleis mainly used for detecting raw water and purified water TDS in the current water dispenser and is in communication connection with the water quality monitoring module, so that healthy drinking waterof the user is guaranteed.

The invention discloses an afforestation wagon. The afforestation wagon comprises a wagon body, wherein a sapling accommodating base is arranged on the wagon body; saplings are arranged on the saplingaccommodating base; a supporting table is arranged in the rear of the wagon body; a displacement mechanism is arranged on the supporting table; a rotating mechanism is connected to the displacement mechanism; a linkage mechanism is connected to the rotating mechanism; a clamping jaw is connected to the linkage mechanism; a supporting frame is arranged at the rear end of the wagon body; an earth moving board is arranged at the bottom of the supporting frame; a pushing air cylinder which is connected with the earth moving board is arranged at the bottom of the wagon body; a wagon head is arranged at the front end of the wagon body; an excavating mechanism is arranged in the front of the wagon head, and comprises a fixing frame which is fixed to the front part of the wagon head; a telescopicdevice is connected to the fixing frame; a folding rod is connected to the bottom end of the telescopic device; two excavating claws which are hinged together are connected to the tail end of the folding rod; supporting rods are hinged to the top ends of the two excavating claws, and are fixed to the fixing frame. Through the adoption of the afforestation wagon disclosed by the invention, automatic pit digging can be realized, each sapling can be placed in the corresponding pit through mechanical operation, and automatic burying is performed, so that the afforestation wagon has the advantagesof being time-saving and labor-saving.

The invention discloses a digital display mechanical wrench torsion testing table that is made up of base board, protecting bracket, analog sleeper bolt, digital display torsion sensor, balance device, digital display screen, and screen placing bracket. The invention could measure the output torsion of the hydraulic pressure bolt wrench and the mechanical bolt wrench of railway maintaining mechanical product.

The invention discloses a filling system for paint production in the technical field of paint production. The filling system comprises a base, first side plates, second side plates and a second transverse plate, wherein a conveying assembly is arranged between the first side plates, lifting assemblies are arranged on the second side plates, a lifting cylinder is connected to the second side platesthrough the lifting assemblies, and a filling assembly is arranged on the second transverse plate. According to the filling system, the lifting cylinder is driven by the lifting assemblies to move downwards, so that a filling opening in a material blocking hopper is located in the inner side of an opening of a coating tank, and coating liquid is effectively prevented from accidentally splashing to the opening of the coating tank through the material blocking hopper; pressing plates are tightly pressed on the side wall of the coating tank through springs, so that the position stability of thecoating tank is improved; and a filling pipe moves, a filling head extends into the coating tank to fill coating liquid, the filling head is moved along with rising of the coating liquid level, and acertain distance is kept between the filling head and the liquid level all the time, so that the situation that the filling head extends into the coating liquid or the coating liquid splashes due to the fact that the distance is too long is avoided.

The invention discloses a hourglass convenient in accurately controlling timing duration. The hourglass comprises a cylindrical upper funnel and a cylindrical lower funnel which are made of transparent glass, and further comprises a ball valve, scale marks and a circular-truncated-cone-shaped base, the cylindrical upper funnel and the cylindrical lower funnel are provided with a cylindrical upper cavity and a cylindrical lower cavity respectively and an upper circular-truncated-cone-shaped cavity and a lower circular-truncated-cone-shaped cavity which are communicated, and the upper circular-truncated-cone-shaped cavity and the lower circular-truncated-cone-shaped cavity are provided with an upper sand leaking passage hole and a lower sand leaking passage hole which are communicated respectively; the ball valve comprises a rotating shaft, a handle and a ball with a second round through hole, the ball is arranged in the upper sand leaking passage hole, a noctilucent coating is arranged on the surface of a steel ball, the scale marks comprise upper scale marks, lower scale marks and corresponding numerical values, the upper end of the circular-truncated-cone-shaped base is provided with a big round concave hole, and round nano micro-absorbing glue and release paper are arranged at the bottom end of the circular-truncated-cone-shaped base. The hourglass is capable of accurately controlling timing duration, simple in structure and attractive and elegant.

The invention discloses a dual-purpose desk for students. The desk comprises a desk body and desk legs for supporting the desk body, wherein a fixed desk top, a movable desk top hinged to the fixed desk top and retractable support rods for supporting the movable desk top are arranged on the desk body; one end of each retractable support rod is hinged to the desk body, and the other end is fit with a groove in the back of the movable desk top; a book accommodating groove for accommodating reading books is formed in the movable desk top and fit with opened books in size, and elastic clamps for clamping the books symmetrically extend from two opposite side walls of the book accommodating groove. The dual-purpose desk for the students is simple in structure and can be used as a special writing desk as well as special book reading desk, and the book accommodating groove fit with the opened books in size is formed in the movable desk top and can prevent falling of the reading books and accidental turning of pages.

The invention discloses a crate type basket which comprises a top cover, a crate type basket body, a handrailing, a wearproof pad, an upper fixing plate, damping springs, a base, universal wheels, fine sand, a lower fixing plate, buffering elastic balls, a shoulder strap, reinforcing pads, an iron ball and connecting rods. The reinforcing pads are evenly distributed in the crate type basket body, the shoulder strap is mounted on one side of the crate type basket body, the handrailing is mounted on the other side of the crate type basket body, the wearproof pad is mounted on the inner wall of the bottom of the crate type basket body, the top cover is mounted at the top of the crate type basket body, the connecting rods are mounted corresponding to one side of the top cover, the iron ball is mounted on one sides of the connecting rods, the upper fixing plate is mounted at the bottom of the crate type basket body, the damping springs are mounted between the lower fixing plate and the upper fixing plate, the buffering elastic balls are embedded in the lower fixing plate and the upper fixing plate, and the base is mounted at the bottom of the lower fixing plate. The crate type basket has the advantages of high stability and good damping effect.

The invention discloses a foldable scaffold comprising straight ladder mechanisms and a carrying platform. The carrying platform comprises a first carrying platform and a second carrying platform, the outer sides of the first carrying platform and the second carrying platform are pivotally connected with ladder columns, locking components are connected between the inner side of the first carrying platform and the inner side of the second carrying platform, and the inner sides of the first carrying platform and the second carrying platform are mutually pivotally connected to form a first pivotal axis. Each locking component comprises a first pivot joint and a second pivot joint which are symmetrically arranged, the upper ends of the first pivot joint and the second pivot joint are respectively rotationally pivoted on the inner sides of the first carrying platform and the second carrying platform, and the lower ends of the first pivot joint and the second pivot joint are mutually pivotally connected to form a second pivotal axis which is arranged right below the first pivotal axis and parallel to the same. The foldable scaffold has the advantages of foldability, smaller occupation space, and convenience in storage and transport.

The invention discloses a medical edge tool destroyer and an edge tool storage device. The medical edge tool destroyer comprises a destroyer, a blocking slot and a storage device, wherein the destroyer is of a cylindrical structure; a circular hole is formed in the top center of the destroyer; a first air cylinder is fixedly arranged on each of inner walls of opposite two ends of the top in the destroyer; one end, away from the inner wall, of each first air cylinder is connected with a blade; the blades are semicircular and are arranged up and down in a crossed mode; semicircular holes are formed in the centers of the blades; and a fixed column is transversely arranged on the inner wall of the destroyer on the tops of the first air cylinders. According to the medical edge tool destroyer disclosed by the invention, edge tools can be completely processed within a small range though the design of a cutting sleeve, and processing of the edge tools is prevented from being excessively affected through design of a closed plate and the design of a red indicator lamp in the storage device; and the closed plate is automatically closed and cannot be manually opened, so that safety of a user is guaranteed better. The medical edge tool destroyer is simple in structure, is convenient and quick to operate, reduces the cost, and is easy to popularize.

The invention discloses a physical teaching experiment iron support with a wind stopping function. The iron support comprises a fixed bottom plate, a connector and a connecting bolt, a supporting column and a supporting pad are fixed on the surface of the fixed bottom plate, a movable sleeve and a bearing sleeve ring are arranged on the supporting column, connecting rods are fixed onto the bearingsleeve ring, a wind retaining cover is arranged at one end of each connecting rod, a high-temperature-resistant heat insulation spacer is fixed on the inner wall of each wind retaining cover, a locking head is arranged at one end of the movable sleeve, the other end of the movable sleeve is connected with a fixed rod, a fixed iron ring is arranged at one end of the fixed rod, the fixed rod is connected with the fixed iron ring through a connecting bolt in a fastening manner, and a trapezoidal bosses are uniformly fixed on the inner wall of the fixed iron ring. According to the iron support, wax fire is enclosed by the two wind retaining cover by rotating the two connecting rods in the combustion process of an alcohol lamp, so that the wax fire cannot be blown out by outside wind, the influence on physical experiment operation is avoided, a fire disaster is prevented, and safety of the iron support is improved.

The invention relates to a refrigerator which comprises a refrigerator body. A refrigerating chamber is arranged on the upper portion of the refrigerator body, and a freezing chamber is arranged on the lower portion of the refrigerator body. A refrigerator door mounted on the refrigerator body comprises an inner door and an outer door. The inner door and the outer door form the refrigerator door which is of a double-layered door structure. When the refrigerator door is closed, the inner door is positioned in the refrigerator, the outer door facing users enables the users to open the refrigerator body, the inner door and the outer door are in rotating or sliding connection, and the outer door and the refrigerator body are in rotating connection. A plurality of special storage devices and lighting devices are arranged in the refrigerator body, the refrigerating chamber and the freezing chamber according to stored objects. The refrigerator is simple in structure and convenient to use, food can be effectively stored according to different packages or cleanliness, neatness and convenience levels of the food, the problems like scattering and odor tainting of the food or food materials are avoided, safety and convenience in storing of the food or the food materials are improved, and the refrigerator is in conformity with use habits of users.

The invention discloses a crane display with a protective device. The crane display with the protective device comprises an anti-toppling mechanism, a damping mechanism and a display main body, a rotating mechanism is connected to the upper portion of the anti-toppling mechanism, a motor is arranged in a supporting column, a movable plate is arranged on the front side of the motor, the bottom of aconnecting plate is fixedly connected with the output end of the motor, a display screen and a connecting socket are arranged on the front side of the display main body, and a base plate is fixedly connected to the bottom of the display main body. The crane display with the protective device is provided with a rubber block and a damping spring, the rubber block and the damping spring can deform when the device vibrates, so that a certain buffering effect can be achieved on vibration generated in the traveling process of a crane, the impact of the vibration on the crane display can be effectively reduced, meanwhile, parts can be prevented from loosening and falling off due to vibration of the crane display, so that the crane display is protected conveniently, and the service life of the crane display is prolonged.

The invention discloses a rust-proof treatment device for a high-purity gas steel cylinder. The device comprises a supporting mechanism, a driving mechanism and a spraying mechanism, the supporting mechanism comprises a base, a supporting frame, a first motor, a lead screw, a moving table, a magnet block and a guide groove, the first motor is arranged in the base, the output end of the first motor is connected with one end of the lead screw, meanwhile, the moving table is connected to the lead screw, the driving mechanism comprises a second motor, a third motor, a main wheel gear, a rack, a connecting frame, a ball, a driven gear, first transmission frames and a second transmission frame, and the output end of the second motor and the output end of the third motor are both connected with the main wheel gear. According to the rust-proof treatment device for the high-purity gas steel cylinder, the first transmission frame and the second transmission frame are arranged, the multiple sets of first transmission frames and third motor rotate at the same time under the action of the second motors and the third motors, and therefore machining equipment below the first transmission frames and the third motor can be used for conducting dust removal and spraying on the multiple steel cylinders at the same time, and the processing efficiency of the device is improved.

The invention discloses a geographic information acquisition device for territorial space planning, which comprises a bearing plate, an acquisition assembly and a first threaded rod, the middle part of the bearing plate is in lap joint with the acquisition assembly, the middle part of the bottom of the acquisition assembly is fixedly connected with a first threaded sleeve column, and the first threaded rod is embedded into the first threaded sleeve column. First limiting rings are fixedly connected to the bottoms of the two sides of the collecting assembly, first limiting rods are connected into the first limiting rings in a penetrating mode, and movable grooves are fixedly connected to the two sides of the bearing plate. According to the geographic information acquisition device for territorial space planning, the acquisition mechanism improves the practicability of the device main body, convenience is brought to the acquisition work of related workers, the workers can conveniently record acquired data, the working efficiency of the workers is further improved, the protection mechanism plays a certain role in protecting the acquisition assembly, and the working efficiency of the workers is improved. The collecting assembly can be sleeved with the protective cover, the collecting assembly is prevented from making contact with the outside, and then the service life of the collecting assembly is prolonged.

The invention provides a planet wheel type stair-climbing electric wheelchair. The wheelchair comprises a wheelchair frame, a chair backrest, an electric wheelchair controller, a battery, a caster, a front wheel assembly, a stair-climbing controller, a centering roller bearing, a centering bearing block, a conducting slip ring, a connecting disc, a wheel axle fixing component, two driving shafts,a direct-current turnover motor, an RV speed reducer, a pressure sensor, a control box, a tilt sensor, an anti-forerake bracket and two planet wheel groups, wherein the anti-forerake bracket is driven by an electric push rod; and the two planet wheel groups are driven by the direct-current turnover motor through the RV speed reducer and symmetrically distributed so as to realize the stair-climbing function of the electric wheelchair. In each of the planet wheel groups, special allocation of a hub motor and two free wheels is adopted; and the planet wheel groups can work in a manual mode, an electric wheelchair mode and a stair-climbing mode. In addition, in the wheelchair, the pressure sensor and the tilt sensor are used for feeding back the wheelchair running state when the electric wheelchair goes upstairs and downstairs.

The invention relates to a mounting device, in particular to a convenient hand sanitizer mounting device. The technical problem is to provide the convenient hand sanitizer mounting device which is simple and convenient to operate, capable of pressing hand sanitizer, automatically fixing the hand sanitizer, automatically and stably clamping the hand sanitizer and convenient for taking out tissues. According to the technical scheme, the convenient hand sanitizer mounting device comprises a wall body, a supporting base, a treading mechanism and a pressing mechanism, wherein the supporting base is connected to the middle of the front side of the wall body, the treading mechanism is arranged on the right side of the supporting base, and the pressing mechanism is arranged between the upper portion of the wall body and the treading mechanism. The pressing strip moves downwards to drive the contact rod to move downwards, so that the moving block is pushed to move downwards, the lifting shaft is driven to rotate towards the inner side, and then the clamping plates are driven to gradually get close to press and fix the hand sanitizer, so that the effect of fixing the hand sanitizer when the hand sanitizer is pressed is achieved, it is guaranteed that the hand sanitizer can be accurately pressed, and the hand sanitizer is prevented from toppling over.

The invention relates to an electric bicycle pedal locking mechanism, which is characterized by comprising a locking rod and a drive mechanism, wherein the locking rod is movably arranged at the inner side of an electric bicycle pedal, has an extension state and a withdrawing state and is abutted against the inner side of the electric bicycle pedal in the extension state, so that the electric bicycle pedal can be prevented from sliding towards the tail of an electric bicycle and dropping off from a landing state; and the drive mechanism is connected with the locking rod and drives the locking rod so that the locking rod keeps the extension state or the withdrawing state, and the drive mechanism is connected with a bicycle lock mechanism of the electric bicycle. Compared with the prior art, the electric bicycle pedal locking mechanism has the advantages that by arranging the locking rod which is connected with and driven by the bicycle lock mechanism of the electric bicycle at the inner side of the electric bicycle pedal, after the bicycle lock mechanism is locked, the locking rod is driven by the drive mechanism to extend outwards and abut against the inner side of the electric bicycle foot brace, so that the electric bicycle pedal can be effectively prevented from sliding towards the tail of the electric bicycle and dropping off from the landing state.

The invention discloses a rotary member self-locking device which comprises a cylinder rod and a cylinder barrel which are nested on the inner side and the outer side and fixedly connected with a rotary member and a fixing member respectively, wherein a first bump of the cylinder rod and the inner wall of the cylinder barrel form a first rotary pair; a second bump of the cylinder barrel and the outer surface of the cylinder rod form a second rotary pair; the first bump and the second bump are used for circumferentially dividing a medium space between the cylinder rod and the cylinder barrel into a first cavity chamber and a second cavity chamber which are relatively sealed; the first cavity chamber and the second cavity chamber are communicated with a switch valve connector opened in a normal state through a first through hole and a second through hole respectively; and a switch valve can be switched to a cut-off state according to the medium pressure of the first cavity chamber or the second cavity chamber to limit the relative movement of the cylinder rod and the cylinder barrel. The potential safety hazard caused by failure of rotation control is effectively avoided through a cooperative relationship of the members of the self-locking device, so that the safety reliability of the overall operation is guaranteed. On the basis, the invention further provides engineering machinery using the self-locking device.

The invention discloses a small indoor humidifier device, which comprises an upper shell, a moisture discharging mechanism, a lower shell, a power supply device and a suction fixing device. The moisture discharging mechanism is arranged at the top of the upper shell, the lower shell is arranged at the bottom of the upper shell, the power supply device is arranged between the upper shell and the lower shell, and the suction fixing device is arranged in the bottom end face of the lower shell and provided with a suction fixing cavity at the lower end of the lower shell. A suction fixing connectoris fixedly arranged at the upper end of a suction fixing plate which is arranged in the suction fixing cavity, and the suction fixing connector is fixedly arranged at the upper end of the suction fixing cavity and is in fixed connection fit with the lower shell. The small indoor humidifier device is simple in structure and convenient to operate, potential safety risks caused by pouring of water in the device knocked over accidentally can be effectively prevented, and accordingly safety and utilization effects are greatly improved.

The invention discloses intelligent agricultural security and protection monitoring equipment based on Internet of Things. The equipment comprises a supporting column, a threaded transmission rod and a driven tooth, the threaded transmission rod is movably connected in the supporting column, the driven tooth is in lap joint with the bottom of the supporting column, a transmission rod is in lap joint with one side of the driven tooth, and a connecting block is movably connected to the surface of the threaded transmission rod. A threaded hole is connected to the middle of the connecting block in a penetrating manner, a first connecting plate is fixedly connected to the other side of the connecting block, and an embedded shelving plate is connected to the interior of the first connecting plate in an embedded manner. According to the intelligent agricultural security and protection monitoring equipment based on the Internet of Things, the convenience of a device main body is improved through a convenient maintenance mechanism, the maintenance work of related workers is facilitated, the workload of the workers is reduced, the working efficiency of the workers is improved, the stability of the device main body is improved through a stabilizing mechanism, the device is prevented from being accidentally overturned in the using process, and the device is protected.

The invention relates to the technical field of argon bottle mounting equipment, and discloses an argon bottle mounting structure of a handheld laser-induced breakdown spectrometer. The structure comprises a first bottom plate, a first vertical rod and a first transverse rod. The first vertical rod is fixedly connected with the first transverse rod, the first vertical rod is fixedly connected withthe first bottom plate, and an inclination angle adjusting mechanism is arranged on the first transverse rod; the inclination angle adjusting mechanism comprises a first sliding rod, a connecting rodand a first circular ring, the connecting rod is fixedly connected with the first circular ring, the upper end face of the connecting rod is fixedly connected with the bottom face of the first sliding rod, a surrounding mechanism is arranged on the first bottom plate, and a bottom supporting mechanism is further arranged on the first bottom plate. The first sliding rod drives the first circular ring on the connecting rod to move forwards to enable the top end of the argon bottle to incline forwards, a certain angle is formed between the argon bottle and the ground, a gap is formed between thebottom of the argon bottle and the ground, the supporting plate can be conveniently inserted into the bottom of the argon bottle, the argon bottle carrying convenience is improved, and the argon bottle pulling-down safety is guaranteed.

The invention discloses an interior design flower placing and mounting rack convenient to disassemble, which comprises a device base, a supporting connecting rod and a movable block, one side of the top of the device base is fixedly connected with the supporting connecting rod, the movable block is movably connected in the supporting connecting rod, and one side of the interior of the supporting connecting rod is fixedly connected with a limiting convex block, wherein a positioning bolt is connected to one side of the supporting connecting rod in an embedded mode, an elastic groove is fixedly connected to the other side of the movable block, a spring is fixedly connected to the interior of the elastic groove, a connecting plate is connected to the other side of the spring in a lap joint mode, and a flower placing plate is fixedly connected to the other side of the connecting plate. According to the indoor design flower placing and mounting rack convenient to disassemble, the flexibility of the device main body is improved through a mounting adjusting mechanism, meanwhile, a worker can conveniently assemble and disassemble a flower placing plate according to actual requirements, the functionality of the device main body is improved through the auxiliary watering mechanism, and the working efficiency of related workers is improved; and the stability of the device body is improved through the supporting rods.

The invention relates to the technical field of living appliances, in particular to a rack and a modern home system thereof. The system comprises a bottom plate and tablet computer placing devices, the bottom plate is connected with the two tablet computer placing devices different in size, the tablet computer placing devices are used for placing a tablet computer and adjusting the placing angle of the tablet computer, and each tablet computer placing device comprises a positioning plate. According to the invention, when the flat plate placing devices are used, a flat plate is placed in the placing groove and then is fixed by using a small sucker, the supporting plate is adjusted to be inserted into a proper angle adjusting groove to form a required angle, and when the drainage device is used, water in the towel placing position is drained along the first drainage groove and the first drainage hole; water in the clamping grooves and the fruit tray containing positions is scraped down and discharged through the water scraping blocks made of rubber materials, it is guaranteed that water cannot be accumulated on the rack, the using effect cannot be affected, when positioning is needed, the button of a cylindrical pen structure is adopted to determine the stopping position, the four-foot clamping jaw is used for clamping the positioning grooves, fixing is achieved, and accidental touch and tipping are prevented.